55463520 has 192 divisors, whose sum is σ = 211631616. Its totient is φ = 11919360.

The previous prime is 55463519. The next prime is 55463531. The reversal of 55463520 is 2536455.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56635 + ... + 57605.

It is an arithmetic number, because the mean of its divisors is an integer number (1102248).

Almost surely, 2^55463520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55463520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105815808).

55463520 is an abundant number, since it is smaller than the sum of its proper divisors (156168096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55463520 is a wasteful number, since it uses less digits than its factorization.

55463520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 55463520 is about 7447.3834331260. The cubic root of 55463520 is about 381.3605888985.

Adding to 55463520 its reverse (2536455), we get a palindrome (57999975).

The spelling of 55463520 in words is "fifty-five million, four hundred sixty-three thousand, five hundred twenty".